Hi guys , some of you might have same issue as i did, so here what i did to get past an apparent stall.

After downloading initial exe file from blizz site the status bar stopped at 2/3 of the way through for an hour.

i searched for the agent.exe file and then selected open containing folder from the right click options - then found it was in a battle.net folder - delete the battle.net folder and run the initial setup exe again took about 5 mins to get to the actual installer after that.

im 16% through install now - fingers crossed